#pragma once
#include <iostream>
#include <unistd.h>
using namespace std;

typedef void (*work_t)(int);        // 函数指针
typedef void (*task_t)(int, pid_t); // 函数指针

void PrintLog(int fd, pid_t pid)
{
    cout << "sub process: " << pid << ", fd: " << fd << ", task is : printf log task\n"<< endl;
}

void ReloadConf(int fd, pid_t pid)
{
    cout << "sub process: " << pid << ", fd: " << fd << ", task is : reload conf task\n" << endl;
        
}

void ConnectMysql(int fd, pid_t pid)
{
    cout << "sub process: " << pid << ", fd: " << fd << ", task is : connect mysql task\n" << endl;
        
}
task_t tasks[3] = {PrintLog, ReloadConf, ConnectMysql};

uint32_t NextTask()
{
    return rand() % 3;
}

void worker(int fd)
{
    // sleep(100);
    // 从0 中拿任务
    while (true)
    {
        uint32_t command_code = 0;
        ssize_t n = read(0, &command_code, sizeof(command_code));
        if (n == sizeof(command_code))
        {
            if (command_code >= 3)
                continue;
            tasks[command_code](fd, getpid());
        }
        else if(n == 0)
        {
            std::cout<<"sub process: "<< getpid() << "   quit now ..."<<std::endl;
            break;
        }
    }
}